A patient with diabetes and heart disease is diagnosed with chronic renal failure. The nurse realizes that this patient should NOT be prescribed which of the following classifications of medications?

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Patients with chronic renal failure may require adjustments to their medications due to the decreased clearance of drugs by the kidneys. Oral antihyperglycemic agents, such as metformin, are not recommended in patients with chronic renal failure, as they can increase the risk of lactic acidosis. Beta-blockers and calcium channel blockers may be used in patients with heart disease and chronic renal failure, but dosages may need to be adjusted. Analgesics may also be used, but non-steroidal anti-inflammatory drugs (NSAIDs) should be avoided as they can further damage the kidneys.

A Patient with Diabetes and Heart Disease Is Diagnosed with Chronic